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GEOGRAPHIC INFORMATION (Tables)

6 Months Ended

Nov. 30, 2020

Geographic Information Disclosure [Abstract]

Revenue from External Customers by Geographic Areas [Table Text Block]

		Six Months Ended						Three Months Ended
		November 30, 2020			November 30, 2019			November 30, 2020			November 30, 2019
Revenues from sales to unaffiliated customers:
United States		$	241,000		$	224,000		$	107,000		$	109,000
Asia			897,000			1,460,000			550,000			797,000
Europe			1,170,000			717,000			580,000			416,000
South America			82,000			71,000			39,000			24,000
Middle East			125,000			309,000			96,000			241,000
Other			1,000			10,000			1,000			10,000
		$	2,516,000		$	2,791,000		$	1,373,000		$	1,597,000

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- References

No definition available.

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- Definition

Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph a
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599

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